Not upto the MCC though.
I can't see Sky giving up the entire Lords Ashes test match to <insert FTA broadcaster here> just like that.
Plus, if it did happen and when to anywhere else other than 5, that would hack them off as well, as guardians of England home test match highlights
I suppose a compromise could be reached where the last post-tea session could be shown live each day on 5, then roll into the highlights of the rest of the day straight afterwards.
My user name might look like Hatton Cross, but it's pronounced Throatwobbler Mangrove.